If you are only using Kix for login processing your options are limited to the rights of the user. However, admin scripts are very powerful and can do just about anything. I suggest your start in the manual and then the User Defined Functions (UDFs) and look at all the amazing functions that have already been done for you.
All the UDFs are here -
http://www.kixtart.org/forums/ubbthreads.php?ubb=postlist&Board=7&page=1
How to use UDFs -
http://www.kixtart.org/forums/ubbthreads.php?ubb=showflat&Number=81943#Post81943
If you are new to scripting, and/or have ever used vbscript, you will find kixtart very familiar and easy to learn. Powershell (as an alternative), while very powerful, is not very forgiving, and, in my opinion, ugly to read and write.
The best thing to do is ask yourself what you want to automate, and see what is available.
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(... better days ahead)